Betterment Option :
Even after student has secured admission as per first merit list student still remain in the process for betterment if seats available

Applicants whose names appear in the merit list of a particular junior college should fill up the admission form of that junior college, attach all the relevant documents in original with photocopies, and must secure a provisional admission in that junior college within the stipulated time on payment of Rs. 50/- (Rs. Fifty only), failing which they will have no claim in that junior college for that sub stream, will not be eligible for betterment and their names will be dropped from all the subsequent merit lists.

betterment option may be available only once & only to those applicants, whose names have appeared in the earlier merit list for a stream, and who have secured provisional admission in the Junior College allocated to them

the third list is like a betterment option list suppose u don`t get in the college of your choice in the first and second list u might have a chance to get it in the third list so u can opt for that college